Full process fertilization plan for pear trees

Pear trees belong to the Rosaceae family and the Pear genus. Pear trees enter the peak fruiting period after 3-4 years of cultivation. Pear trees in their peak fruiting period require 4-6 kilograms of nitrogen, 2-3 kilograms of phosphorus, and 4-6 kilograms of potassium for every 1000 kilograms of pear produced. Pear trees of different ages have different fertilizer requirements. The main nutrients needed by young pear trees are nitrogen and phosphorus, especially phosphorus, which has a good effect on the growth and development of the root system. Establishing a good root structure is a prerequisite for the healthy and robust growth of pear trees. The main nutritional requirements of adult fruit trees are nitrogen and potassium.

Key points of management technology:

1： From January to March: dormancy period

Management focus: When the pear tree buds turn green, it is the best time to prevent and control pear scab, black spot disease, and pear aphids. Optional pesticides: 80% Daisen manganese zinc 1000 times solution and 10% imidacloprid 600 times solution mixed application

2： Mid April to early May: before and after the flowering period

Management focus: No spraying during the initial flowering period, 2-3 times after flowering, 10-15 days apart; The first two sprays should not use hydrogen sulfide or fuxing, and medication in the later stage should also be cautious.

3： Mid May to late June: Young fruit stage

Management focus: bagging time: bagging is generally completed within 20-45 days after flowering, with a focus on late April to early May, and no later than late May. Premature bagging can easily damage the fruit stem, or the weight of the bag can cause the stem to bend, leading to fruit drop; If bagged too late, the appearance of the fruit may not be as smooth as if bagged early, and the fruit dots may be small and shallow. In the past two years, many orchards have bagged their emerald crown pears after 45 days of blooming, and the entire fruit has turned yellow brown

4： Mid July to late August: Young fruit stage

Management focus: Cutting off sprouts in summer and timely controlling summer shoots are beneficial for fruit enlargement.

5： From early September to early October: fruit ripening period

Management focus: Control the growth of autumn shoots with pesticides (purpose: to prevent early flowering in winter, promote fruit setting in the second year, and improve resistance)

6： November to December: After falling leaves

Management points: Clean the orchard, burn it centrally, cut it in winter in a timely manner, and destroy diseased branches. 2. The prevention and control of pests and diseases are targeted at diseases such as stripe disease and overwintering pests and diseases such as mites.